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          <h1 id="刀具壽命與磨耗">刀具壽命與磨耗</h1>

<p>刀刃損傷模式繁多，可歸因於瞬間失效的模式，含斷刀、熱崩刃，見<a href="../availability/index.html">本文</a>；而歸因於長時間消耗而失效的模式，<u>建議以<strong>刀面磨耗</strong>作為評估刀具壽命的標的</u>。</p>
<p>HiNC採用磨耗模式<a id="fnref:1" href="#fn:1" class="footnote-ref"><sup>1</sup></a>：</p>
<p><span class="math">\(W(T) = \frac{k(T) L P}{H(T)}\)</span></p>
<p>其中W為磨耗量、k為磨耗係數、L為接觸長度、P為壓力、H為硬度、T為溫度。</p>
<p>HiNC計算的磨耗包含：</p>
<ul>
<li>刀面磨耗(Crater Wear)</li>
<li>刀緣磨耗寬度(Flank Wear Width)</li>
<li>刀緣磨耗深度(Flank Wear Depth)</li>
</ul>
<p>此處刀面磨耗係指刀面磨耗深度。</p>
<p>刀緣磨耗寬度在論文中最常用來作為評估標的，因它有量測標準。刀具在平面運動中，會先磨刀峰再磨刀緣，所以在實驗室可以刀緣磨耗寬度評估總磨耗。</p>
<p>但若銑削中刀具有上下運動，刀緣會在刀峰磨完前發生隨機碰撞，此時刀緣磨耗寬度就不具評估總磨耗的價值。</p>
<p>HiNC 計算的 刀緣磨耗寬度，假設刀緣沒有隨機碰撞，僅適用於平面切削，HiNC保留這項數值於研究用途。</p>
<div class="footnotes">
<hr>
<ol>
<li id="fn:1">
<p>Lee, R. S, and J. L Jou. &ldquo;Application of Numerical Simulation for Wear Analysis of Warm Forging Die.&rdquo; Journal of Materials Processing Technology, Proceedings of the 6th Asia Pacific Conference on materials Processing, 140, no. 1 (September 22, 2003): 43–48.<a href="#fnref:1" class="footnote-back-ref">&#8617;</a></p>
</li>
</ol>
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